Seed drill



Oct. 6, 1931 G. .1. MILLER 1,826,560

SEED DRILL Filed March 15, 1928 25 i w, *A rill of thi'sjgeneralftype and'class Patented Oct. 6, 1931 PATENT oFF cn I {i GnoRqE Janus or, cnans m, ENG AND y SEED 1531 11,

T fsp ng n nl d lumen-15, 192s; seaaf 261,911, and in erearsritain narchae, 1927.

it i This invention relatesto seed drillsofthe typel'in which seed is supplied from'a hopper to a controlling delivery. valve: having ipe ripheral spaces,i-vconstituting seedreceptacles '6 which transfer the seed supply from thehop-v 'per to ajdelivery opening orchute from which the seed is discharged'intoith'e furrow, or the like prepared in the I soil for its1reception. More particulaiuywit relates-to that class of an enclosing valve case and isnotsupplied directly from the hopper but is connected to it thehopper'through a tapering conduit or' seed receptacle intowhich seed-is delivered in an i; approximately continuous'stream but .at a

'- restricted rate so thattherespective periph eral spaces in the delivery valve do not completelyfillup with seed but contain only such 'ered through the hopper to theconduit or re- 1 ceptacle; in consequenceof this the seed is de- '7 i live'red to the furrow not continuously along 1! its whole length;bu t only intermittently soas .to form bunches or patches in the seed furis described for instance in my prior British SpejcificationQNO. 237,391 Y b a drill ofthe type and class described which shall be less liable to derangement in use, i. e. H

the delivery valve that it need be machined, or otherwise made accurately to fit its enclosing case or box, on its peripheral surface only.

attempt to prevent seed detritus and the like fromjamming between the moving surface of the valve audits containing box, have hitherto'had to be machined accurately to fit the surrounding box or case, are in seed drills constructed in accordance with this invention 7 made with clearance, and n order to retaln any dbris and preventlthejamming action indicated above, they are blanked over with lviated. 1 restricted quantity of'seed ,as'ha's been delivbreeze during its fall after release from the f T-he object of my inventionis to construct T Figure 3=is a detail end view of the tapered throughout the drawings. The side cheeks of'the valve which, in an on the: far side; In Figure 1 the operating spindle-shown at 4 in Figure 2, has, inorder that at itsdelivery end its width is less than thin-discsorthe like so that the seed recepl'tacles in thevalve are: walled in within the valve structure, itself,and, excepting only on the peripheral surface, are independent of the walls ofthe valve case: Onthe periphfi eral surface the valvebox closes the se'ed rcceptacles in those areas between'the opening from'the seed deliveryto'the valve and the -discharge"opening from the valve tovthe seed drill wherein'the delivery valveset in I "closeproximityto the ground-operateswithin 1 furrow. v I 60 f I furtherarrange the conduit from'the supply hopper or the like'so that-at the point immediately adjacent to the periphery of the i moving valve; the width of its opening is less continued downwards round the discharge orifice, excepting towards the rear, so as to form a depending shield to screen thefalling seed from the deflecting actionof any valve to earth. i. I

In the accompanyingdrawings: Figure 1 is a skeleton perspective view of the movable member or valve; .l

Figuref2 shows, by way-of exampleya'side view of'part'of a seed drill, with the cover iplate removed, constructed accordingito this invention;

seed conduit; and 1 v I Figure Lisa detail-under plan showing In carryingout-myinventlon I so construct the 'relatively'inclined edges of the seed re- In Figure 2 the valve l is drawn the blanking disc adjacent to the observer removed-so as to show the peripheral spaces or seedv receptacles 2 and the blanking di'sc3 to avoidconfusiom-been omitted." The c onduit 5 from the supply hopper is made so the distance between the cheeks 3 (see parspaces between the side cheeks'i3, and the Walls ofthe valvelooxfi. Depending Walls 7 surround the discharge orifice, excepting shown f-at 8; and fol-111,131;- already described,

aWind shield.

1 "In theparticular torm of seeddrill'shOWn in the accompanying 'drawing's; tlie*ends of the projectionsjseparatingthe seed recepw'g r a *drical Wall and two side Walls closing the ends ftacles in the valve areshovvn as formed square I t i si ei heeks;8; Sd:t at :;a the s ve releases underneath,'the opening extends subv stantiallya'long thejwhole width-of thevalve. These ends "9am m adeigof appreciable length measured along .;the periphery iof .--the valve {as shown in l-Figure 1 so that they do not easily-wear. away as would theend of a thin partitiom and" destroy theipejripheral "run -5 fining fitvalready; described; it will loeqreal- '1iz ed,-however,' thatjin drills of this 'elass; the "contentsfiof. the seed receptacles are dis charged at fintervals, depending UPOllTtli, 1i speedot'operationo'ithe valvealong the line V f 1 ferredeto coniprisingashaft,avalve member i 7 jIIlOfiOILQf the. drill, andi'in: :ord-er more uitablyto dispose on discharge the several zseedsfrc'ontained "in pocket I fshaperthe releasing edge of the valve box and the cor- [responding edge of the receptacles of theseed valve sothat theyiare relatively inclined} see "particularly Figure 4); v V In this: manner" the openingot the-valve on the lower or. dis-', charge or fices'commen'ces'at one-side; and. thereafter progressively extends over the "Aseeddrill arrangedit'odeliverseeds in r v "termittently, comprising 'a'casingshaVing .a V eylindricalwall formed with intake'and dis 5" charge apertures and tivo side walls formed v w with-coaxial bearingapertures and having its 1 9 11" V internalcylindrieal; surface and its bearing. 1' apertures only'ma'chinedy a, shaft supported F in'the loearii1gapertures, ai-valvenientiherse- "casmgza." i

I 1". Seed? drill: arranged to deliver seeds intermittently "comprising a casing having-tn a' cylindrical. wall." formed with-intake and cured on said shaft Within the casing, formed V with peripheral-recesses extendingjac'ross its machined to fit closely the internal cylindrical 'suriace'of thecasing, and side cheeks secured to the valve member on either s1de', spaced' away from they-side walls of theicasing and Width and having its-peripheralsurface only machined on their peripheral surfaceonly to s rfaced t ca in fit closely against the internal cylindrical,

ferredtocomprising a casing having-a cylinf cyli d ca W ll;- end-f rmed in the cylindrical Wall with an intakeaperture of less width than the "Width of the cylindrical wall and with adischargeaperture,a rotating shaft; supported by the side walls-51o extend through' t he casing a valvemember of greater Width-than the widths of the intake aperture 1 a v,securedtothe shaftand formed vvith recesses i-extending across 1 its Width,- 1'. two annular plates secured one to eachflsid'e. otith e'valvei" 'me nber to close the l ends. otthe, recesses,;,a casing having a peripheral wairfiain close ly' toithe peripheries-of the valveinemberand the :platesfiand two? side alls'spaced away i each freni adjacen p a ejand formed each? with anfaperturento receivegand support the v. shaft', fa; conduit-ior nedlintegral with the top 7 pOfthe casing and having'itslower endof less V Qacedr'dingV-tov this invention may,"itis-inani rest,- be'liope'r'ated either. by ,continuouszsrotary; motion or'by an intermittent vmovement such internal width than'fthe 1 Width-10f the alve sichargeaperture in the]1atter. ,j-. i

j In testimony whereof l affix GEORGE AMES; MILLER; V 

